FIX: Parent list is not discontinued by pressing 'Enter' twice after its nested list has been discontinued.

Code for test:
<ol>
<li>test
<ol>
<li>test </li>
</ol>
</li>
</ol>
1. Go to the end of the nested list and press 'Enter' twice
2. The nested list is discontinued but by pressing Enter the parent list can not be discontinued.